<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>欢迎注册</title>
    <link href="../css/register.css" rel="stylesheet">
</head>
<body>

<div class="form-div">
    <div class="reg-content">
        <h1>欢迎注册</h1>
        <span>已有帐号？</span> <a href="#">登录</a>
    </div>
    <form id="reg-form" action="#" method="get">

        <table>

            <tr>
                <td>用户名</td>
                <td class="inputs">
                    <input name="username" type="text" id="username">
                    <br>
                    <span id="username_err" class="err_msg" style="display: none">用户名不太受欢迎</span>
                </td>

            </tr>

            <tr>
                <td>密码</td>
                <td class="inputs">
                    <input name="password" type="password" id="password">
                    <br>
                    <span id="password_err" class="err_msg" style="display: none">密码格式有误</span>
                </td>
            </tr>


            <tr>
                <td>手机号</td>
                <td class="inputs"><input name="tel" type="text" id="tel">
                    <br>
                    <span id="tel_err" class="err_msg" style="display: none">手机号格式有误</span>
                </td>
            </tr>

        </table>

        <div class="buttons">
            <input value="注 册" type="submit" id="reg_btn">
        </div>
        <br class="clear">
    </form>

</div>


<script>

    var usernameInput = document.getElementById("username");

    //usernameOnblur
    usernameInput.onblur = usernameOnblur;


        function usernameOnblur() {
            var username = usernameInput.value.trim();

            //账号6-12位字符
            let use = /^\w{6,12}$/;
            let flag = use.test(username);
            //if(username.length >= 6 && username.length <= 12){
            if(flag){
                document.getElementById("username_err").style.display="none";
                return true;
            }else {
                document.getElementById("username_err").style.display="";
                return false;
            }
    }



    //passwordOnblur
    var passwordInput = document.getElementById("password");

    passwordInput.onblur = passwordOnblur;

        function passwordOnblur() {
            var password = passwordInput.value.trim();
            //密码6-12位字符
            let use = /^\w{6,12}$/;
            let flag = use.test(password);
            //if(password.length >= 6 && password.length <= 12){
            if(flag){
                document.getElementById("password_err").style.display="none";
                return true;
            }else {
                document.getElementById("password_err").style.display="";
                return false;
            }
    }




    //telOnblur
    var telInput = document.getElementById("tel");

    telInput.onblur = telOnblur;


        function telOnblur() {
        var tel = telInput.value.trim();
            //电话11位全为数字，得以1开头
        let use = /^[1]\d{10}$/
        let flag = use.test(tel);
        //if(tel.length >= 11){
        if(flag){
            document.getElementById("tel_err").style.display="none";
            return true;
        }else {
            document.getElementById("tel_err").style.display="";
            return false;
        }
    }




</script>
</body>
</html>